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-rw-r--r--target/linux/brcm2708/patches-4.19/950-0643-drm-modes-Parse-overscan-properties.patch102
1 files changed, 102 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0643-drm-modes-Parse-overscan-properties.patch b/target/linux/brcm2708/patches-4.19/950-0643-drm-modes-Parse-overscan-properties.patch
new file mode 100644
index 0000000000..f8de9b5fc3
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.19/950-0643-drm-modes-Parse-overscan-properties.patch
@@ -0,0 +1,102 @@
+From 99b367ee521e48beae92bea59515dd0f08f2e55b Mon Sep 17 00:00:00 2001
+From: Maxime Ripard <maxime.ripard@bootlin.com>
+Date: Wed, 19 Jun 2019 12:17:51 +0200
+Subject: [PATCH] drm/modes: Parse overscan properties
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Commit 3d46a3007cd8f73bae502bf5c171977b91d7aacc upstream.
+
+Properly configuring the overscan properties might be needed for the
+initial setup of the framebuffer for display that still have overscan.
+Let's allow for more properties on the kernel command line to setup each
+margin.
+
+Reviewed-by: Noralf Trønnes <noralf@tronnes.org>
+Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
+Link: https://patchwork.freedesktop.org/patch/msgid/e481f1628e3768ca49226ec2115cfa4dfcbd5e4c.1560783090.git-series.maxime.ripard@bootlin.com
+---
+ Documentation/fb/modedb.txt | 2 ++
+ drivers/gpu/drm/drm_modes.c | 44 +++++++++++++++++++++++++++++++++++++
+ include/drm/drm_connector.h | 5 +++++
+ 3 files changed, 51 insertions(+)
+
+--- a/Documentation/fb/modedb.txt
++++ b/Documentation/fb/modedb.txt
+@@ -57,6 +57,8 @@ Options can also be passed after the mod
+
+ Valid options are:
+
++ - margin_top, margin_bottom, margin_left, margin_right (integer):
++ Number of pixels in the margins, typically to deal with overscan on TVs
+ - reflect_x (boolean): Perform an axial symmetry on the X axis
+ - reflect_y (boolean): Perform an axial symmetry on the Y axis
+ - rotate (integer): Rotate the initial framebuffer by x
+--- a/drivers/gpu/drm/drm_modes.c
++++ b/drivers/gpu/drm/drm_modes.c
+@@ -1615,6 +1615,50 @@ static int drm_mode_parse_cmdline_option
+ } else if (!strncmp(option, "reflect_y", delim - option)) {
+ rotation |= DRM_MODE_REFLECT_Y;
+ sep = delim;
++ } else if (!strncmp(option, "margin_right", delim - option)) {
++ const char *value = delim + 1;
++ unsigned int margin;
++
++ margin = simple_strtol(value, &sep, 10);
++
++ /* Make sure we have parsed something */
++ if (sep == value)
++ return -EINVAL;
++
++ mode->tv_margins.right = margin;
++ } else if (!strncmp(option, "margin_left", delim - option)) {
++ const char *value = delim + 1;
++ unsigned int margin;
++
++ margin = simple_strtol(value, &sep, 10);
++
++ /* Make sure we have parsed something */
++ if (sep == value)
++ return -EINVAL;
++
++ mode->tv_margins.left = margin;
++ } else if (!strncmp(option, "margin_top", delim - option)) {
++ const char *value = delim + 1;
++ unsigned int margin;
++
++ margin = simple_strtol(value, &sep, 10);
++
++ /* Make sure we have parsed something */
++ if (sep == value)
++ return -EINVAL;
++
++ mode->tv_margins.top = margin;
++ } else if (!strncmp(option, "margin_bottom", delim - option)) {
++ const char *value = delim + 1;
++ unsigned int margin;
++
++ margin = simple_strtol(value, &sep, 10);
++
++ /* Make sure we have parsed something */
++ if (sep == value)
++ return -EINVAL;
++
++ mode->tv_margins.bottom = margin;
+ } else {
+ return -EINVAL;
+ }
+--- a/include/drm/drm_connector.h
++++ b/include/drm/drm_connector.h
+@@ -886,6 +886,11 @@ struct drm_cmdline_mode {
+ * DRM_MODE_ROTATE_0 and DRM_MODE_ROTATE_180.
+ */
+ unsigned int rotation_reflection;
++
++ /**
++ * @tv_margins: TV margins to apply to the mode.
++ */
++ struct drm_connector_tv_margins tv_margins;
+ };
+
+ /**